The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 1989
Filed:
Jul. 02, 1987
Applicant:
Inventors:
Paul C Adair, Springboro, OH (US);
Todd M Hess, Columbus, OH (US);
Assignee:
The Mead Corporation, Dayton, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ; H01F / ;
U.S. Cl.
CPC ...
252 6254 ; 428694 ; 428900 ; 428913 ; 427 44 ; 427 541 ; 427 531 ; 522 25 ; 522 26 ; 522 31 ;
Abstract
The present invention provides magnetic recording compositions containing magnetic particles and a photohardenable composition wherein the photohardenable composition contains a free radical addition polymerizable or crosslinkable compound and an ionic dye-reactive counter ion compound. The ionic dye-reactive counter ion compound is capable of absorbing actinic radiation and producing free radicals within initiate free radical polymerization or crosslinking of the polymerizable or crosslinkable compound. The present invention also provides magnetic recording media incorporating the aforementioned magnetic recording compositions.